Glove-sewing machine



o 1 I i Jan. 3; 1929. 7 1,697,984

H. J. LE VESCONTE GLOVE SEWING MACHINE Filed June 11, 1925 4Sheets-Sheet l RWW Jan. 8, 1929.

1,697,984 H.J.LE VESCONTE GLOVE SEWING MACHINE Filed June 11, 1925 4Sheets-Sheet 2 gwomfoz abbozmq Jan. 8, 1929. 1,697,984

H. J. LE VESCONTE GLOVE SEWING MACHINE Filed June 11, 1925 4Sheets-Sheet 5 gin vented,

Jan. s,- 1929.

H. J. LE VESCONTE x zgiw Patented Jan. 8, i929,

HAROLD J. LE VESCONTE, OF CHICAGO, ILLINOIS, ASSIGNOR TOUIIION"SPECIAIII MA CHINE GOMPANY, OF CHICAGO, ILLIEIOIS, A CORPORATIONOF ILLINOISJ.

enovn-snwrne MACHINE.

Application filed June 11, 1925. Serial No. 36,391.

mechanism and a presser foot, with-means for raising the presser footfrom'the mate rial, while the needle is still is the material and beforethe feed takes place, so that the material may'be swung on the needle asa.

pivot to aidvin the directing of the material. in a sharp curved path. 1

A further object of the invention is to provide a sewing machine havinga clamp feed with a presser foot lifting mechanism of the above type,wherein the footis raised when the upper feed dog is lifted from thematerialwhile the needle is still in the material, so as to completelyrelieve the material, whereby it may be swung on the needle as a pivotto aid in stitching around sharp curves. 7

These and other objects will in part be obvious and will in part behereinafter more fully disclosed.

In the drawings which show byway of illustration one embodiment of theinvention Figure 1 is a rearview of a sewing machine embodying myimprovements;

Fig. 2 is a View partly in section and partly in end elevation from theneedle endof the sewing machine;

Fig. 3 is a front view of a portion of the machine, the work supportbeing removed;

Fig. 4 is an enlarged detailview showing the upper feed dog andfootraisedso that and showing the preferred form of edge.

the material may be swung onthe needle as a pivot. and

Fig. 5 is a plan view of the work support and the parts immediatelyabove thesame,

guide used in connection with my machine.

The invention is directed broadly'to a sew preferably in the form ofaclamp feed, that is, including an upper and a lower feed dog,

which engage the material simultaneously and move it a stitch length.This renders the machine especially adapted for operating. The machineis also provided:

upon leather. with a presser foot which cooperates with the feedingmechanism and the needle in the manipulation of the material andtheholding of the material for'the forming of the stitches.

In addition, the machine includes an auto 7 matic means for raisingthepresser footslightly from the material at a timewhen' the upper feed islifted a slight distance from the material, and whilethe needle'is still:inw

the material, so that the material may be sewing of gloves and thetippingof thefinbed plate 1 carrying a work support 2, also a standard3, havingianoverhanging: arm 4.

.gers where the lineof stitches following around the finger tip must belaid ina very,

- sharply curved line. 7

Referring more in detail to the drawings, my improved machine includesan ordinary- Mounted to reciprocate in this overhanging arm 4: is aneedle bar 5 carrying a=single 'needle-6. The needle bar is reciprocatedby means ofa needle lever-7 which is connected to the needlebarby a linkCooperating, Ywith the needle 6 beneath the work support isa threadcarrying looper 9 whichis pivotally carried by a looper rocker 10,1and.which is oscillated by means'of' a link-r11; The r looper rocker isalsomoved soas to give to the looper'a needle'avoidin g movement, whilethelink 11 oscillates the looperinto and-out of the needle thread loop..The :material is fed across the work support thelvfeedi ng -r mechanismwhich includes a lower feed dogj 12 and anupper :feeddog 13. The lowerfeed dog 12 is carried by-a feedbar .14 pivoted to i a feed rocker 15from which the feedbari-is moved back and forth, and. thus a ifeedi'ngmovement imparted to the feed dog.12.l Thefeed bar is raised and loweredbytheusuall eccentric 16 carriedbylthe main shaft 17 (see.

Fig. The upper feed dog13 is mounted on a bracket 18; Alongside of thefeed bar His an'auxiliary feed bar 19.,( 'e Fig, 3), which auxiliaryfeedbaris pivotedftothev same feed rocker zas the main 'feedibar 14 and ismoved back and .forth by the feed. rocker 15. The bracket .18 issecured-to this .auxil-f iary feed bar 19bymeans of screw-s 20.- The.shank 13 of the upper feed dog extends. .b ew I neath the cloth plateand is secured to this bracket. 18 by means of a screw 21 which passesthrough a slot 22 in the shank 13.-

This auxiliary feed 'bar 19 is raised and lowered by an eccentric 23 onthe main shaft 17 This eccentric 23 is so set relative to the eccentric16, that the upper feed bar is raised, lifting the upper feed dog fromthe material when the lower feed dog islowered from engagement with thematerial. Likewise, when the lower feed dog is'raised into engagementwith the material, the upper feed dog is lowered so as to clamp thematerial, and while the material is clamped by the two feed dogs, it ismoved a stitch length.

The above-described feeding mechanism is shown in detail in the patentto 'lVoodward #591,517, granted October 12, 1897-, and a more detaildescription is not thought necessary. It is only essential to thepresent invention,'in that it is representative of a clamp feed which isespecially useful when operating upon leather material. a

The material is held on the work support by a presser foot 24 carried bya presser bar a usual guide bar 25 is also mounted in the head andconnected to the main presser bar 25 by the arm 28. Whenever the presserfoot israised, this guide bar 25 is also raised therewith. On the lowerend of the guide bar 25 is a bracket 29 whichis L-shaped, and the lowermember thereof extends underneath the lug 3O attachedto the shank of theupper feed dog. The purpose of this angle bracket 29 is for lifting theupper feed dog if it is on the material when the presser foot is raisedby means of'the foot controlled lever 31.- The auxiliary feed bar 19 isspring pressed on to the eccentric 23 and can be lifted therefrom so asto permit the upper feed dog to be raised. This occurs only when it isde sired to place the material between the feed dogs or remove thematerial that is clamped by the feed dogs.

At the back of the machine, there is a cross shaft 32 mounted insuitable lugs 33, 33. This cross shaft is provided-with a forwardlyprojecting arm 34 on the forward end thereof. This arm 34' extendsunderneath the collar 35 fixed to the main presser bar 25. Also securedto the cross shaft 32 is an arm 36. This arm has an arc-shaped slot 37formed therein in which is adjustably mounted a stud 38. On the mainshaft 17 there is an eccentric 39. An eccentric strap 40 cooperates withthis eccentric 39'and a link 41 is rigidly connected to the eccentricstrap. It is also connected to the stud 38 so that as the main shaftrotates, the link 41 will causethe cross shaft 32 to oscillate, and theextent of oscillation imparted to the shaft depends upon the adjustmentofthe stud 38. When the cross shaft 32 is oscillated, it will swing thearm 34, and this will raise the main presser bar and the main presserfoot 24 from the material. It is understood, of course, that thismainpresser bar'is located at one side of the top feed as clearly shownin Fig. 3 of the drawings. It does not cooperate with the lower feed,but does hold the material on the work supportso'as to insure thematerial being stripped from the needle, and also holds the material.

clamped against the work support at the time the stitch is bein set. Theeccentric for lifting the presser foot is so timed that the foot islifted from the work support and the ma terial when the upper feed dogisdescending to clamp the material for feeding it, andwhen the needle ison its up stroke. There is a. time,

therefore, when the presser foot is lifted from the material, the upperfeed dog is also raised from the material, and the needle is in thematerial on its up stroke. At this time. the op- 1 erator may quicklyswing the material on the needle as a pivot, and thus cause a. verysharp V turn to be made of the material. The material is entirely freeof any clamping action of either the foot or the feed dogs at thistimewhen the needle is in it, so that it can be turned freely thereon.Associated with this presser foot is an edge guiding device which I isshownin detail in Fig. 5 of the drawings. This edge guiding device has ahead 42 which is located directly opposite to the needle 6. This headbears against the side face of the presser foot 24. Said head is carriedby a rod 43 mounted in a bracket 44, and a spring 5 45 yieldingly forcesthe rod to the left as viewed in Fig. 5, and against the presser foot-.-

The rod may be retracted by means of a lever 46. The head is just abovethe face of the cloth plate, and therefore, the'edge of the materialasit is being stitched willbe guided by said head. This insures that theline of stitching shall be properly spaced from the edge of thematerial. The head has a rounded face as clearly shown in Fig. 5, whichenables the material to be turned for stitching in acurved path.

By the use of the edge guide shaped and positioned as above noted, thearticle operated upon may be turned in a relatively sharp curve, and atthe same time, the line of stitches which are being formed, maintainedat a predetermined distance from the edge of the fabric. This machine isespecially adapted for tipping the fingers of gloves and the like, whereit is essential that. the line of stitches shall be a. uniformedpredetermined distance from the edge of the leather.

It is obviousthat other ways of raising the presser foot when the upperfeed is free from the material and while the needle is in the eezesamaterial, may be utilized, without departing vfrom the spirit of theinvention as set forth in the appended claims.

Having thus described the invention, what I claim as new and desire tosecure by Letters- Patent, is e 1. A sewing machine including incombination, a work support, a needle bar carrying a single needle,means for reciprocating said needle bar, complemental stitch formingmechanism cooperating therewith, a feeding mechanism including an upperfeed dog for feeding the material, a presser foot, and

means independent of the feeding mechanism and the needle barreciprocating means for automatically lifting the presser foot when theupper feed dog is free from the material and while the needle is stillin the material, so that the material may be swung about the needle as apivot.

2. A sewing machine including in combination, a work support, a needlebar, means for reciprocating said needle bar, a single needle carriedthereby, complemental stitch forming mechanism cooperating therewith, afeeding mechanism including a lower feed dog and an upper feed dogcooperating to clamp and feed the work, a presser foot alongside of saidupper feed dog and having a throat through which the needle passes,automatic means independent of the feeding mechainsm and needle barreciprocating means for raising the presser foot when the upper feed dogis free from the material and while the needle is still in the materialwhereby said material may be turned on the needle as a pivot to directthe line of stitching 1a a sharply neath the work support, an eccentricon said main shaft, and devices actuated by said eccentric forautomatically raising the presser foot when the feed dog is free fromthe material and while the needle is in the material to aid in theforming of the line of stitching in a sharply curved path.

4. A sewing machine including in combination, a Work support, areciprocating needle bar carrying the needle, a feeding mechanismincluding an upper and a lower feed dog for clamping and feeding thematerial, a presser foot, means for automatically raising the presserfoot when the upper feed dog is moved downwardly to engage the materialand before the feeding action takes place, and while the needle is stillin the material, so that said material may turn on the needle as a pivotto direct the feed in a sharply curved path, and a yielding edge guidelocated alongside of the presser foot close to the needle for guidingthe edge of the material, said edge guide having its surface engagingthe material sharply curved so as to properly guide the edge of thematerial as the material travels in a sharply curved path. 1

In testimony whereof, I aflix my signature.

HAROLD J. LE VESGONTE,

